Liaison drip (#3620)

# About the pull request

This PR adds three new outfits to the CL's office.

This PR adds a new snow jacket for the CL.

See the icon checks in the "checks" tab to see the sprites.

# Explain why it's good for the game

Drip good. (sometimes)

# Testing Photographs and Procedure
<details>
<summary>Screenshots & Videos</summary>

Put screenshots and videos here with an empty line between the
screenshots and the `<details>` tags.

</details>


# Changelog

:cl: Morrow, Thwomper
add: Added three new uniforms and a snow jacket for the CL.
/:cl:

code/modules/clothing/suits/labcoat.dm

@@ -297,3 +297,7 @@
 		/obj/item/device/walkman,
 	)
 
+/obj/item/clothing/suit/storage/snow_suit/liaison
+	name = "liaison's winter coat"
+	desc = "A Weyland-Yutani winter coat. Only the best comfort for the liaison in a cold environment."
+	icon_state = "snowsuit_liaison"

code/modules/clothing/under/marine_uniform.dm

@@ -777,12 +777,22 @@
 	icon_state = "liaison_regular"
 	worn_state = "liaison_regular"
 
+/obj/item/clothing/under/liaison_suit/charcoal
+	name = "liaison's charcoal suit"
+	desc = "A stiff, stylish charcoal suit commonly worn by businessmen from the Weyland-Yutani corporation. Expertly crafted to make you look like a prick."
+	icon_state = "liaison_charcoal"
+	worn_state = "liaison_charcoal"
+
 /obj/item/clothing/under/liaison_suit/outing
 	name = "liaison's outfit"
 	desc = "A casual outfit consisting of a collared shirt and a vest. Looks like something you might wear on the weekends, or on a visit to a derelict colony."
 	icon_state = "liaison_outing"
 	worn_state = "liaison_outing"
 
+/obj/item/clothing/under/liaison_suit/outing/red
+	icon_state = "liaison_outing_red"
+	worn_state = "liaison_outing_red"
+
 /obj/item/clothing/under/liaison_suit/formal
 	name = "liaison's white suit"
 	desc = "A formal, white suit. Looks like something you'd wear to a funeral, a Weyland-Yutani corporate dinner, or both. Stiff as a board, but makes you feel like rolling out of a Rolls-Royce."
@@ -795,6 +805,12 @@
 	icon_state = "liaison_suspenders"
 	worn_state = "liaison_suspenders"
 
+/obj/item/clothing/under/liaison_suit/blazer
+	name = "liaison's blue blazer"
+	desc = "A stiff but casual blue blazer. Similar can be found in any Weyland-Yutani office. Only the finest wear for the galaxy's most cunning."
+	icon_state = "liaison_blue_blazer"
+	worn_state = "liaison_blue_blazer"
+
 /obj/item/clothing/under/marine/reporter
 	name = "combat correspondent uniform"
 	desc = "A relaxed and robust uniform fit for any potential reporting needs."